GlobalExceptionHandler.java

package com.micropay.security.exception.handler;

import com.micropay.security.exception.DuplicateObjectException;
import com.micropay.security.exception.NotActiveUserException;
import com.micropay.security.exception.UserNotFoundException;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import com.micropay.security.dto.response.ErrorResponse;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.time.LocalDateTime;
import java.util.Objects;

@RestControllerAdvice
public class GlobalExceptionHandler {

    @ExceptionHandler(Exception.class)
    public ResponseEntity<ErrorResponse> handleGeneric(Exception exception) {
        ErrorResponse body = new ErrorResponse(
                HttpStatus.INTERNAL_SERVER_ERROR.value(),
                "An unexpected error occurred. Please try again later.",
                LocalDateTime.now()
        );
        return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(body);
    }

    @ExceptionHandler(DuplicateObjectException.class)
    public ResponseEntity<ErrorResponse> handleDuplicateObjectException(DuplicateObjectException exception) {
        ErrorResponse body = new ErrorResponse(
                HttpStatus.CONFLICT.value(),
                exception.getMessage(),
                LocalDateTime.now()
        );
        return ResponseEntity.status(HttpStatus.CONFLICT).body(body);
    }

    @ExceptionHandler(UserNotFoundException.class)
    public ResponseEntity<ErrorResponse> handleUserNotFoundException(UserNotFoundException exception) {
        ErrorResponse body = new ErrorResponse(
                HttpStatus.NOT_FOUND.value(),
                exception.getMessage(),
                LocalDateTime.now()
        );
        return ResponseEntity.status(HttpStatus.NOT_FOUND).body(body);
    }

    @ExceptionHandler(NotActiveUserException.class)
    public ResponseEntity<ErrorResponse> handleNotActiveUserException(NotActiveUserException exception) {
        ErrorResponse body = new ErrorResponse(
                HttpStatus.CONFLICT.value(),
                "User is blocked or suspended.",
                LocalDateTime.now()
        );
        return ResponseEntity.status(HttpStatus.FORBIDDEN).body(body);
    }

    @ExceptionHandler(MethodArgumentNotValidException.class)
    public ResponseEntity<ErrorResponse> handleMethodArgumentNotValidException(MethodArgumentNotValidException exception) {
        ErrorResponse body = new ErrorResponse(
                HttpStatus.BAD_REQUEST.value(),
                Objects.requireNonNull(exception.getBindingResult().getFieldError())
                        .getDefaultMessage(),
                LocalDateTime.now()
        );
        return ResponseEntity.status(HttpStatus.BAD_REQUEST).body(body);
    }

}